Definition & Meaning of "slaphead"in English

What is the origin of the term "slaphead" and how is it used?

"Slaphead" is a slang term for a bald person, especially a man. It comes from British English in the 20th century and plays on the image of a bare head being smooth or flat enough to "slap," emphasizing the lack of hair in a blunt, visual way. The term is usually used in informal or joking contexts, often as teasing among friends, but it can be insulting depending on tone and intent. It is mildly derogatory and appearance-based, generally more mocking than vicious.